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    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
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  <body>
    <script>
      let num = 19;
      let result = num > 5 ? "是的" : "不是的";
      console.log(result);
      let time=prompt("请输入一个0~59之间的一个数字")
    let res=time<10? "0"+time:time;
    console.log(res)
    </script>
  </body>
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